409/13+214/41)-474/13 giúp ạ

$\dfrac{409}{13}$ + $\dfrac{214}{41}$- $\dfrac{474}{13}$

= ( $\dfrac{409}{13}$- $\dfrac{474}{13}$) + $\dfrac{214}{41}$

= $\dfrac{409-474}{13}$ + $\dfrac{214}{41}$

=  $\dfrac{-65}{13}$+ $\dfrac{214}{41}$

=  $\dfrac{-65*41+214*13}{13*41}$

= $\dfrac{117}{533}$

= $\dfrac{117 : 13}{533 : 13}$

= $\dfrac{9}{41}$

$#Crunchy$